defineModel — Composition API for v-model. v-model — directive.
defineModel (Vue 3.4+):
1<script setup>2const model = defineModel<string>()3</script>45<template>6 <input v-model="model" />7</template>
Parent usage:
1<template>2 <CustomInput v-model="name" />3</template>
Benefits:
1<script setup>2const firstName = defineModel<string>("firstName")3const lastName = defineModel<string>("lastName")4</script>